Sara Bustillo de Castro found she was healthier and happier living in Madrid than in the UK.Courtesy of Sara Bustillo de CastroSara Bustillo de Castro, a VP and mom-of-two, spent two years living in Cambridge, UK.She said she decided to move to Madrid for better childcare and because she found the UK lonely.Bustillo de Castro said childcare is more affordable in Spain and people were more friendly.This as-told-to essay is based on a conversation with Sara Bustillo de Castro, a VP based in Madrid.